Tone arm protecting mechanism



Dec; 5, 1950 B. R. KAMLER 2,532,555

TONE ARM PROTECTING MECHANISM &

w E m B. R. KAMLER TONE ARM PROTECTING MECHANISM Dec. 5, 1950 '7Sheets-Sheet 2 Filed Aug. 2'7, 1945 1 =:EEEEEEHEHE v Email-5::=========ii .QN NH NN m WNW NW @N |i| l n N N x Q m Dec. 5, 1950 Filed Aug. 27,1945 B. R. KAMLER TONE ARM PROTECTING MECHANISM 7 Sheets-Sheet 3 J Mmww' 444% 14/424? Dec. 5, 1950 B. R. KAMLER 2,532,555

TONE ARM PROTECTING MECHANISM Filed Aug. 27, 1945 r '7 Sheets-Sheet 4 J5WW! II jizz/ezzjar da'm/erv Decv 5, 1950 B. R. KAMLER 2,532,555

TONE ARM PROTECTING MECHANISM Filed Aug. 27, 1945 I 7 Sheets-Sheet 5.fizaew r Dec. 5,; 19% B. R. KAMLER TONE ARM PROTECTING MECHANISM '7Sheets-Sheet 6 Filed Aug. 27, 1945 es 5, 1956 B. R. KAMLER TONE ARMPROTECTING MECHANISM 7 Sheets-Sheet 7 Filed Aug. 27, 1945 Patented Dec.5, 1950 TONE ARM PROTECTING MECHANISM Benedict R. Kamler, South Haven,Mich, assignor to Edward Gray, Chicago, Ill.

Application August 27, 1945, Serial No. 612,836

The invention relates to phonogr-aphs and has reference in particular toa record playing device having novel means for automatically protectingthe record and the tone arm during play and wherein the operator hasaccess to the turntable only during non-play for the purpose of changingrecords.

The record playing device of the invention has been designed to fulfilla definite need of dealers in records who are required to allowcustomers to handle their records and to manipulate whatever type ofphonograph they have been able to provide. This is costly to the dealerssince the records are often damaged by careless customers who drop thetone arm on the record or scratch the record by failing to properly liftthe tone arm. Also the needles are subject to damage and since it isimportant to the dealer that a high quality needle be used for the bestreproduction, this creates a temptation for the customer to appropriatethe needle. The dealer is constantly checking his equipment andreplacing damaged or stolen parts.

An object of the invention is to provide a phonograph which will beautomatic in the playing of a record after the same has been placed onthe turntable and which will provide means for protecting both therecord and tone arm during play.

Another object of the invention is to provide a phonograph havingimproved means for automatically manipulating the tone arm so that thecustomer or operator is not required to handle the same, therebyeliminating the possibility of damage to the tone arm and also therecord.

A more specific object of the invention resides in the provision of arecord playing device having novel means for actuating the tone arm andwherein the tone arm and record are automatically covered by canopymeans for protection during play, with the tone arm likewise beingprotected during non-play so that the customer or operator is onlyrequired to change records.

Another object of the invention resides in the provision of mechanismfor automatically manipulating the tone arm and which will properlyposition the arm for a ten or twelve inch record.

Another object is to provide a phonograph which will be automatic in theplaying of a record and which will protect the record and tone armduring play, and wherein switch means are provided which may be actuatedby the operator for terminating the playing of the record in advance andreturning the parts to rest.

16 Claims.

Another object is to provide improved mechanism for application to arecord playing device for accomplishing the objectives herein set forth,and which will be simple in construction and efficient in operation.

With these and various other objects in view, the invention may consistof certain novel features of construction and operation as will be morefully described and particularly pointed out in the specification,drawings and claims appended hereto.

In the drawings, which illustrate an embodiment of the invention, andwherein like reference characters are used to designate like parts-Figure 1 is a fragmentary vertical sectional view illustrating anembodiment of the phonograph mechanism comprising the improvements ofthe invention, with the parts shown in non-playing position;

Figure 2 is a fragmentary vertical sectional view of the phonographmechanism of Figure 1 showing the same in playing position;

Figure 3 is a horizontal sectional view taken along line 3-3 of Figure 1showing certain parts of the mechanism in plan;

Figure 4 is a horizontal sectional view taken along line 4-4 of Figure 2showing certain parts of the mechanism in plan;

Figure 5 is a vertical sectional view taken along line 5-5 of Figure 2and showing the elevating and turning means for the tone arm, withassociated parts;

Figure 6 is a sectional view along line 6-6 of Figure 5;

Figure '7 is a detail sectional view showing the construction of theelectric switch controlled by the canopy;

Figure 8 is a detail sectional view taken along line 88 of Figure 7;

Figure 9 is a sectional View showing in elevation another electricswitch controlled by the tone arm; and

Figure 10 is a wiring diagram with parts of the mechanism beingillustrated diagrammatically.

Referring to the drawings which illustrate an embodiment of theinvention, conventional phonograph elements are disclosed including aturntable 29 and tone arm 22 with the turntable having the usual centerpin 2!. The turntable is suitably supported for rotation and is drivenby the electric motor 23 shown in the wiring diagram, Figure 10. Thecabinet for the phonograph mechanism of the invention essentiallyincludes side members 24, a back wall 26, and a horizontal partitionmember 27 for supporting varione mechanism and above which is locatedturntable 20 and the tone arm 22. The back wall 25 extends above thehorizontal partition member 2! and likewise said side members projectabove 21 to a certain extent for purposes to be presently described. Atop wall or cover 28 is suitably secured to said upwardly projectingportions 25a of the back wall and of the side members. Said portions,together with top wall 23, provide a cover for a part of the turntable.More particularly, the top wall 28 covers the rear half portion of theturntable, and the same also provides a cover for the tone arm which islocated within this part of the cabinet to the rear of the turntable. Inaccordance with the invention the projecting portions have forwardextensions 35 which extend beyond the forward edge of the turntable andof course on each side of the same.

Upstanding supports 3i and 32 extendtransversely of the cabinet, bestshown in Figures 1 and 3, the supports extending upwardl from and beingfixed to partition wall 2'5. Support 3! is located forwardly of theturntable and between extensions 3% to connect thesame. Support 3?: islocated under the top wall and rearwardly of theturntable and extendsbetween portions 24a of the side walls of the cabinet.

The canopy is adapted to rest on said sup ports when in a closed andopen position respectively. on support tie canopy being in openposition. Figure 2 shows the canopy resting on support 3 l, the samebeing in closed position. It is desired that the surface of the supportsadapted to contact with the canopy be covered with felt or similarmaterial to eliminate any noise which might otherwise occur as thecanopy moves from one position to the other. The side portions 24atogether with their forward extensions 39 may be provided with anarcuate groove 3 2 for receiving the canopy which therefore is guided atits respective ends as a result of said groove and extends from one sidewall of the cabinet to the opposite side wall. It will be observed thatthe canopy in open position is substantially located under top wall 23and within this protecting part of the cabinet to thereb uncover theturntable, rendering the turntable accessible to the operator. Recordsmay be placed on the turntable or removed therefrom when the canopy isdisposed in open position, although the tone arm is never thelessprotected thereby, since in this position the canopy has a locationbetween the tone arm and the turntable. With the canopy in closedposition the turntable and any record supported thereon is completelycovered since the canopy together with the cabinet including top wall 23provides a housing therefor which prevents access to the turntable andof course the tone arm and associated mechanism to be presentlydescribed.

The end members 35 are suitably secured to the respective ends of thecanopy and the same form the end walls of the canopy structure. A member35 is disposed relatively adjacent each side Wall 24 of the cabinet, asshown. in Figure 5. A. rocker arm is suitably secured to each end member35 and the same is pivotally supported at its lower end b the transverseshaft 23? which extends transversely of the cabinet, being located belowpartition wall 2'1. Shaft 31 is journalled for rotation by dependingsupports 38. Each support 38 is provided with a top horizontal flangewhich engages the undersurface of the partition 21 and is securedthereto i'igure 3. shows the canopy 33 resting by the screws 39. Theshaft 3'! is thus located the proper distance below the turntable sothat the arms 36, which are oscillated upon rotation of the shaft, swingthe canopy in the desired arc. Each arm 36 is nonrotatably fitted to itsprojecting end of shaft 31 and held to the shaft by the nut 4G with aspacing washer 4i being interposed between the arm and its support 38.

The tone arm 22 carries the "conventional form of reproducing unit 42and a needle 43 as shown in Figure 1. At its opposite end the tone armprovides spaced extensions 4 carrying pins 45 by means of which the armis pivotally secured to the swivel bracket 45 permitting movement of thearm in a vertical direction. The bracket 38 is mounted for rotation onthe tone arm swivel post 47 fixed to partition member 2? and beingdisposed vertically. Rotation of the bracket on the swivel postaccordingly imparts rotation to the tone arm in a horizontal plane. Saidbracket is suitably supported for rotation by the base 48 and isretained in position on the post b the cap G9. Aplate 50 is suitablysecured to said bracket 46 so as to rotate with the same and it will beobserved, as best shownin Figures 3 and 4, that said plate is providedwith a switch engaging extension 5|.

The tone arm has a position of rest, as shown in Figur'e 3, in whichposition the same is located to the rear of the turntable and also tothe rear of the cano y. As thus located the tone arm is covered by theuse wall 28 and is coinpletely shielded by the canopy '33, preventingaccess thereto by the, operator even when the canopy is in openposition. When the canopy moves from an open to a closed position thetone arm is adapted to move from a position of rest to an operativeposition over the turntable for playing a record supported th'eif Themeans for elevating and lowering the turntable and for oscillating thesame when elevated will now be described.

Th elevating and lowering pin for the tone arm is indicated by numeral52, the same extending in a vertical direction v through plate '59,through collar 53 fixed to theplat'e, to project above the sameforcontact'with plate 54 fixed to the underside of the tone arm for thepurpose. Since the pin 52 is carried by plate '59 the same hasoscillating movement conforming to that of the tone arm andfor thepurpose the partition wall 2? is providedwith an areuate shaped slot 55.The pin extends throlig'h the slot to depend below wall 2'5, the saidlower depending end having operative association 'with the elevating andlowering plate 56. Said plate is provided with a circular depression 51and to one side of said depression the metal of the plate is slotted,with the metal of the Slot bein'g'b'c'rit upwarmy to form the stop 58.Di'ame'trically opposite the depression 51 the upstanding rod 61]comprising the needle positioning rod is fix'dly'secured to the plate asat 6!. The red eiten'ds through partition member 2'5 which is providedwith an arcuate slot 62 for receiving the same and the coil spring 63 issecured at one end to said rod and at its other end to the pin '64depending from the member 27. The collar 65 is secured to theund'ers'urface' of said plate 56 and the actuating .pin 66 extendsthrough said collar and plate with the plate being adjustably fired tothe pin by the screw 61. The pin 66 extends through openings formed inthe respective arms of the U-shaped bracket 68. By eammin aeubn appliedto the depending end of the 'p'in'tlie assembry including plate 56 maybe raised or lowered as desired and which action may take placesimultaneously with rotary movement of the plate with pin 66 as an axis.The spaced arms of the U-shaped bracket 68 thus retain the plate 56 forraising and lowering the tone arm and for oscillating the tone arm whileelevated.

The main operating shaft E is suitably jour naled' for rotation in theside extensions ll of a bracket '52 shown in plan in Figure 6. The sideextensions H are flanged at their upper ends which contact theunder-surface of partition member 2?, being fixedly secured thereto bythe screws, 13. The driving pulley id is fixed to the left end of themain operating shaft '36 as shown in Figure 5, and said pulley isoperatively connected to the driving motor i5 by. the endless belt it,as shown in Figure 10. A cam member ii is fixedly secured to shaft "isby the set screw it and said cam member is disposed in verticalalignment with pin 6% and accordingly has carnming action on said pin tomove said plate 55 vertically. The camming portion of said cam "H isbest illustrated in Figures 1 and 2. The portion 80 is designed to lowerplate 56 in a gradual manner so that the tone arm will be gentlydeposited on the record. Portion 8! is designed to elevate plate 56 in arapid manner whereby the tone arm is quickly elevated when the playingof the record is complete so that upon oscillating movement of the armthe needle will not scratch the record.

A crank 82 is fixed to the right hand end of the main operating shaft,the said crank having a U-shaped end 83 which carries the securing nut 8for fixedly securing the crank to the shaft in proper adjusted position.One end of the canopy drive rod 85 is pivoted to said crank 82, numeral86 indicating the pivot pin, with the parts be" ing suitably spaced by awasher iii. The opposite end of the canopy drive rod is pivotallysecured to arm 88, the numeral t9 indicating the pivot pin joining theparts. Said arm 88 has a U-shaped end 98 which is fixedly secured inproper adjusted position to the transverse shaft 37 by means of the setscrew 9i. Rotation of the main operat ing shaft 76 through crank 82,driving rod 35, and

arm 88 will rock the transverse shaft 3'! and thus impart oscillatingmovement to the canopy 33. The parts are so designed that a full swingof the canopy occurs for each half revolution of the main operatingshaft it. It will also be observed that when the canopy is in eitheropen or closed position the crank 82 is on dead center. ihis dead centerrelation of the crank 82 and drive rod 85 is important since any attempton the part of the user to open or close the canopy by applying motionthereto will be effectively prevented. This dead center feature is alsoimportant in connection with the control plate 52 suitably secured tothe main operating shaft it) by the pin 93. As shown in Figure 10 theplate is provided with diametrically spaced notches 94 and 95 located inits periphery and which are engaged by the resilient detent 9E suitablysecured to flange 91 of the support 12. Said spring de- ,tent has anassembled relation with the respective terminals of switch S8 and whichswitch is actuated by said spring detent when the same is caused to moveout of either notch Be or 95. This structure determines the positions ofrest of the main operating shaft and which are 180- degrees displacedwith respect to each other. Accordingly for each 180 degree rotation ofthe main operating shaft the crank will be moved 6 from one dead centerposition to its other dead center position to either open or close thecanopy.

A second arm 190 of smaller size than arm 88 is similarly secured toshaft 3 7 by means of the U-shaped portion 0i and set screw 32. A pushrod W3 is pivotally secured to crank ifiii as at id iand said oppositeend of the. push ,rod is pivoted at its to the tone arm return crankltd. Said crank it is supported by the main operating shaft 16 so as tohave free pivotal movement on said shaft. The free end of the crankcarries a member III? located in front ofand adapted to contact theelevating and lowering pin 52 for the tone arm. As a result of movementimparted to pin 52 by said member iii? the tone arm is oscillated.

Push rod I03 is adapted to actuate switch I08 comprising spaced contactsand an actuating member I09 which are suitably secured in assembledrelation to bracket lid comprising part of the rear wall of bracket 72.Switch H18 controls the electric circuit to the phonograph motor 23shown in the wiring diagram, Figure 10, so that rotation of theturntable is initiated by the push rod I03 as the canopy is caused toclose and is terminated following the playing of a record as the canopyis caused to open.

In Figure 2 the plate 55 is shown in its lowermost position since pin 65is in contact with a low portion on cam member 77. A similar position of,the parts is illustrated in Figure 5 wherein it will be observed thatthe pin 52 is out of engagement with plate 56 and the tone arm islikewise free of the pin so that the arm may travel over a record forplaying the same without interference as regards said pin.

When the playing of the record is completed and the needle of the tonearm has reached the tripping groove in the record it will be observed byreference to Figure 4 that the switch exten- SiOn 5| has been caused tocontact switch H2. Said switch is a normally open switch and as a resultof engagement by extension 5|, due to extreme travel of the tone armtoward the center of the record, the same is closed, thereby closing theelectric circuit to motor 15. It is necessary that switch H2 be properlypositioned in order that the terminals of the same will be closed whenthe playing of the record has been completed. In accordance with theinvention said switch is carried by bracket I I3 and secured to member21 by a single screw 1 I l so that some adjustment of the switch ispossible. Bracket H5 is fixedly secured by one or more screws H6 inspaced relation with the switch H2. Said bracket H5 carries an adjustingscrew H? which contacts the pivoted bracket H3 and thus determines theposition of the switch. Said pivoted bracket is yieldingly urged intocontact with the adjusting screw by the coil spring I 13.

When said switch H2 is closed to close the circuit to motor 15 the mainoperating shaft ill is rotated, with the result that the portion 8! oncam member i1 is almost immediately caused to contact pin 66, thuselevating plate 56 which elevates pin 52 to lift the tone arm 22 fromthe record. This rotation of the main operating shaft will also havecaused actuation of crank 82, the canopy drive rod and arm 88 tooscillate the canopy 33, causing the same to move from its closedposition toward an open position. Simultaneously with said movement thepush rod I03 will have been actuated to cause movement of member ID! ina direction toward the right as shown in Figure 2. Said memberaccordingly contacts-pin 52 toproduce oscillating movement of the tonearm to-efiect return of the tone arm to its position of rest.Initialmovement of the tone arm takes place independently of plateE-S.This movement is represented by the distance the tone arm moved in orderto play the record. Additional movement of the in 52 will seat the samein depression 52 and bring the pin into; contact withstop 58. As memberiii? continues its movement the pin 52, the tone arm 22. and the plate56 will be rotated since the threeelernents are operatively connectedduring motion inthis direction by the stop 58. It will be observed that.the plate 56 is rotated against the tension of coil spring 63 and thatsaid rotation takes place while the plate is elevated since pin 68' isnow in contact with the highportion of cam. member iii, When the mainoperating shaft '29 has. rotated half a revolution one of the notchesStand 95-. will; allow detent 93 to seat, thus opening switch 223. andcausing the operating motor to stop. When this takes place the canopy 33will be located in open position and the tone. arm in itsposition. ofrest. The tone arm is maintained elevated by pin 52 since plate Efiisheld in elevated position.

The needle positioning rod 66. is oscillated? by plate 56 in a mannerconforming to the oscillations of the tone arm 22. In: accordance withthe invention the tone arm is-automatically located in proper positionfor playing a tenor twelve inch record. The adjusting mechanisifor'accoinplishing this is shown in Figures 1 and 2, the same comprisinga stop arm i2 3 pivoted at 21, with one end being disposed over the slot6 2 and its opposite end having a position adjacent the-magnet H22.Holding switch i-23 issuitably fixed to member 2? adjacent magnet i 22and is adapted to be closed by stop arm 52% when: the same is attractedby the magnet. An. adjusting screw I24 is provided for determiningtheposition of arm I23 for a ten inch record and a similar adjustingscrew i125- is provided ior determining the position of the arm for atwelve inch record.

Inaccordancewith the invention a pair of electric switches are locatedadjacent the turntable and under the record supported thereon so as: tobe actuated by the record. The switch casing i2 is suitably to member2?, as best shown inFigures 1 and 2. The switch structure housedwithinsaid' casing provides a pair of switches-each including a contactmember disposed in spaced relation with each other and identified bynumerals i2? and I28. Member iii is adapted to be engaged by a ten inchrecord as well as a twelve inch record, whereas member I218 is engagedonly by a twelve inch record. Details of' the switch structure are bestshown in Figures '7 and 8. The members l2? and 28 are each suitablysupported exteriorly of the casing 525 by a contact member I30. Thecontact members I38 and 53! for each switch are suitably secured to aninsulating block 532. pivotally supported at i315. by means of the armiii-i. The arm is provided with a diagonal part i35- which projectsupwardly above casing 523 and adjacent support 32. Said part M35 is thusengaged by the canopy 33 when in open position to rock arm i211,bringing members 528 and/or i2? up, against a record supported on theturntable and, thereby effecting a closing of the switch contacts i230and 53! for one or both switches. In the event a. record is not on theturntable it. will, of course, be understood that the contacts ofneither switch are closed. When a ten inchrecordis placed on the.turntable only member [21 is caused to engage the same and thus 8 thecontacts of this switch only are closed. However, when a twelve inchrecord'is placed on the table the contacts of both switches. are closedsince members I27: and I28 are both caused to contact the record.

Withv the tone arm in, a. position of rest,v as shown in Figure 3, itwill be observed that the needle positioning rod 69 is spaced a maximumdistance from the stop arm I253. When the motor '55. is energized toproduce rotation of main operating shaft 10 for playing a record thetone arm is swung to an operative position over the turntable insynchronism with oscillating movement of the canopy from an open to aclosed position. As the canopy moves from its open position push rod 183is actuated, causing movement of member H3! in a. direction toward theleft, Figures 1 and 2. As member liil. moves away from pin 52 plate 53is rotated by spring 63, the action of the spring on the plate producingrotation thereof and also movement of pin 52, and thus the tone arm,which is moved toward the turntable. Also the rod Gil ismoved by theplate so in a, direction toward the stop arm I29, Figures 3 and 4.Rotation of plate 55 continues until said rod 5%, contacts the stop arm.If the magnet 122 has been energized the arm is. held against adjustingscrew lit for playing a twelve inch record. If magnet l22 has not beenenergized the stop arm will contact positioning screw I24 and thus thetone arm will have limited additional movement for playing a ten inchrecord.

Although plate 55 is held against further rotation in this direction bythe needle positioning red the member ilil' will continue to move itsfull distance until the canopy 33 is in closed position. When the canopyhas been so positioned the cam member ll will have beenv rotated, asshown in Figure 2, with the needle $5 in contact with. the low portion853 of the cam. Plate 56 is accordingly lowered and the adjustment ofsaid plate on pin 66 should be such that pin 52 is free of the plate andthis allows thepin to descend to its. lowermost position out of contactwith tone arm 22, being retained, however, by collar 53. As canopy S3 ismoved from an open to a closed position push rod [63 is caused tocontact member Hit of the switch Hi8, closing the contacts of saidswitch to energize motor 23, with the result that the turntable isrotated to cause rotation of the record. It will be understood thatrotation of the record takes place in advance of the actual lowering ofthe tone arm onto the record.

The various switches of the present apparatus, the magnet {22, drivingmotor it, and the turntable motor 23 are electrically connected incircuit as diagrammatically illustrated in the wiring diagram of Figure10. The electric plug i352 is adapted to be connected to a source ofelectric current and the same provides power leads L1 and L2,representing the negative and positive terminals of the current source.For operation of the present mechanism the master switch E39 is closed.A. record H9 is then placed on the turntable and the start button Ml!isv actuated by the operator to close this switch. Assuming, forillustrative purposes, that a ten inch record has been placed on theturntable, then switch 52'! only is closed and the electric circuitthrough motor 15 is closed to energize said motor as follows-from leadL1, switch M9, conductor I41, switch 5.21, conductors I42 and I43, tomotor 15, to conductor m to L2. Operation. of motor 15 will rotate themain operating shaft Ill, producing rotation of control plate 92. As aresult the detent 96 moves out of its notch to efiect closing of switch98, which functions as an interlocking switch, closing the circuit tothe motor through conductors I46, I41 and I48. The motor continues inoperation notwithstanding that switch I40 is opened since the operatormomentarily closes the same, and likewise switch I21, which is opened asa result of movement of canopy 33 from part I35, allowing spring I36 totake over so that the switch contacts naturally open.

Switch I08 is closed, as herein described, by push rod I 03, closing thecircuit tomotor 23, through conductor I50, said switch I08, conductorII, motor 23, and conductor I52. tone arm is lowered onto the rotatingrecord the main operating shaft 10 will have rotated a half revolutionwhereby the notch 94 will align with the detent 96, seating said detent,opening switch 98, and stopping motor 15.

The parts are held in this position with the phonograph motor operatingand with the tone arm in contact with the record until the tone armreaches the tripping groove in the record. The action of the trippinggroove is to bring extension 5! of plate 50 into contact with switchII2, closing the switch, which has the eifect of again energizing themotor in the following manner: from lead L1, conductor I50, conductorI5I,

conductor I53, said switch II2, conductor I54 to conductor I 43, throughmotor. 15, to conductor I 44 and back to lead L2. Said motor continuesin operation until the tone arm has been located in its position of restand with the canopy in its open position. Here again switch 98 acts asan interlocking switch to maintain the circuit to the motor closed afterswitch I I2 is permitted to open and the circuit to the motor is brokenwhen switch 98 seats in said notch 95.

When a twelve inch record is placed on the turntable both switches I21and I 23 are closed. The circuit to the motor 15 is closed through pushbutton switch I and switch I21, as previously.

described. However, since switch I20 is now closed and the magnet I22 isenergized through said switch I28, conductor I and conductor I56. Thestop arm I20 is immediately attracted to said magnet, closing switchI23, which acts as an interlocking switch; holding the circuit to themagnet I22 closed since switch I28 is opened when the canopy moves awayfrom part I35.

A reject switch I51 is provided so that the operator may close the samein the event he desires to terminate the playing of a record in advanceof completion. By conductors I58, I and ItI said switch is connected inparallel with switch II2 so that closing of the reject switch has thesame effect to start operation of motor I5 as if switch II2 hadbeenclosed through actuation of the tone arm.

In the event the operator should start opera-- tion of the mechanismwithout placing a record on the turntable the same includes means in theform of a safety switch I62 for returning the tone arm to its positionof rest. From the wiring diagram it will be observed that switch I62 isalso connected in parallel with switch II2, one

As the ported on the turntable.

form I66, the same having a position adjacent the turntable and disposedso as to have engagement with the needle 43 of the tone arm for both aten or twelve inch record. Depending supports I61 extend through member21 to receive the securing nuts I68. The platform is held'in elevatedposition by coil springs I10, with the nuts I68 limiting upwardmovement'so that the platform is normally located below a record sup-The center depending pin I1I extends through member I21 to contact aterminal of switch I62. Normally said switch I62 is open since theplatform is held elevated by coil springs I10. However, when the tonearm is lowered onto the platform the weight or said arm will close thecontacts of switch I62. Operation of the motor is started through theelectrical circuit as described in connection with Figure 10, and thetone arm is returned to its position of rest with the canopy also beingreturned to its open position.

The invention is not to be limited to or by details of construction ofthe particular embodiment thereof illustrated by the drawings, asvarious other forms of the device will of course be apparent to thoseskilled in the art without departing from the spirit of the invention orthe scope of the claims.

What is claimed is:

1. In phonograph mechanism, in combination, a cabinet, a turntable andmeans for rotating the same housed by the cabinet, canopy means forcovering said turntable having an open' and a closed position with thecabinet, said canopy means in open position rendering the turntableaccessible to the operator for changing a record and in closed positioncovering said turntable in combination with the cabinet for protectingthe record, a tone arm having a position of rest within the cabinet andrearwardly of the canopy means when in open position, and means foractuating the tone arm from said position of rest to an operativeposition and return for playing the record, said canopy means havingmovement from an open to a closed position in synchronism with the tonearm.

2. In phonograph mechanism, in combination, a cabinet, a turntableand'means for rotating the same housed by the cabinet, canopy means forcovering said turntable having an open and a closed position with thecabinet, said canopy means in open position rendering the turntableaccessible to the operator for changing a record and in closed positioncovering said turntable in combination with the cabinet for protectingthe record, a tone arm having a position of rest within the cabinet andrearwardly of the canopy means when in open position, means foractuating the tone arm from said position of rest'to an operativeposition over the record and return for playing said record, and othermeans having actuation in synchronism with the tone arm for moving thecanopy means from an open to a closed position as the tone arm isrendered operative and for returning the canopy means to .an openposition as the tone arm is returned to its position of rest.

3. In phonograph mechanism, in combination, a cabinet, a turntablewithin the cabinet and positioned so that a top wall of the cabinet isdisposed partly over the turntable, canopy means for the turntablehaving oscillating movement to and from open and closed positions, saidcanopy means in open position having location under said top wall andrearwardly of the turntable and in closed position being located overthe turntable'to form a cover therefor in combination with the cabinet.for protecting "a record on the turntable, 'a tone arm .pivotallysupported for =zoscillating movement from a position of rest under saidtop wall and rearwardly of the turntable to an operative position overthe turntable for playing a record, means for actuating said tone arm,and means for actuating the canopy means in synohronism so that thecanopy means is closed when the tone armis playingia record and is openwhen thetone arm :is in its position of 'rest.

4. Phonograph mechanism as defined by claim 3,-wherein :the means foractuating the tone arm includes means 'for elevating and lowering thesame .and means for oscillating the tone arm when elevated, :and controlmechanism for controllingthe lowering of the tone arm in accord- -ancewith the size of the record placed on the turntable 'for playing.

5. In phonograph mechanism, the combination with'aturntable and means.for'rotating the same, of atone arm havingaposition of rest rearwardlyof the turntable, means for actuating said tone arm from said positionof rest to "an operative position over the "turntable and 'return forplaying 'a record placed on the turntable, canopy means disposed overthe turntable and having oscillating movement to and from 'forward andrearward positions with respect to the turntable, "said canopy means inits rearward position being :disposed between the turntable and theposition of rest of the tone arm, 'and'mechanism for impartingoscillating movement to the canopy meansin synchronism with the:actuation of said tone arm.

6. In phonograph mechanism, the combination with a turntable and meansfor rotating the same, of a tone "arm having a position .of restrearwardly o'f the'turntable, means for actuating said tone arm fromsaid position of rest to an "operative position over the turntable andreturn ior playing a record placed on the turntable, canopy :meansdisposed over the turntable and having oscillating movement to and fromforward and rearward positions with respect to the turntable, :s'a-idcanop means including an arcua te top member which is disposed over therear half portion of the turntable when in a rearward :position and overthe front half portion of "the turntable when in ;a forwardposition,"and mechanismtorimparting oscillating movement to the :canopymeans, said mechanism receiving actuation from the means for moving thetone .7. :Phonograph mechanism as defined in claim 55, wherein the meansfor actuating the tone arm includes means for elevating and lowering thesame and means .for oscillating the tone arm when-elevated, and controlmechanism for controlling the lowering-ofthe tone arm in accordance withthe size of the record placed on the turntable.

8. In phonograph mechanism, the combina- "tionwith a turntableand meansfor rotating the 'same, of a tone arm having a position of restrearwardly ofthe turntable, means'for actuating said tone arm from saidposition of rest to an operative po'sitionOVer the turntable and returnfor playing a record placed on the turntable, canopymeans disposed overthe turntable and. having "oscillating movement to and from for- ;wardand rearward positions with respect to the turntable, said canopy meansincluding an arcuate top memberanddepending sidem'embers, a shaft forpivotally supporting said depending 12 side members, and means forrocking said shaft to oscillate the canopy means, said rocking means forthe'shaft having a dead center position when the canopy m ansis locatedin either forward 'or rearward positions.

9. In phonograph mechanism, the combination with a turntable and meansfor rotating the same, of a tone arm for playin a record placed on theturntable, a canopy disposed over the turntable and having oscillatingmovement to and from forward and rearward positions, a shaft po itionedbelow the turntable for pivotally supporting the canopy .for saidoscillating move- .ment, a swivel bracket located rearv' rdly of theturntable and mounted for rotationabouta ver tical :axis, said bracketpivotall supporting one end of the tone arm for movement verticallyabout a horizontal-axis, mechanism including'an elevating plate forelevating and lowering the tone arm, a cam member for moving the platein a vertical direction, means oscillating the tone arm in a horizontalplane whens elevated, and other means operatively connected to the shaftfor :oscillating the canopy in synchronism with the oscillating movementof the tone arm.

10. In phonograph mechanism, the combination with-a turntable "and meansfor rotating the same, of a tone arm for playing a record placed theturntable, "a canopy disposed over the turntable and having oscillatingmovement to and from forward and rearward positions, a shaft positionedbelow the turntable for pivotally supporting the canopy for saidoscillating movement, a swivel bracket located rearwardly or" theturntable and mounted for rotation about avertical Jsaid bracketpivotally supporting one end of the tone arm for movementverticallyabout a 'horizonta l'axis, mechanism including an e1evat ingplate for elevating and lowering the tone rm, a main operating shaft, acam member on the shaft rotated thereby for :moving the plateinavertical direction, means receiving actuation from the main shaft andconnected to said first mentioned shaft for oscillating the canopy, andother means connected to said first mentioned shaft for oscillating thetone arm in a horizontal plane when the same is elevated by theelevating plate.

11. 'In phonograph mechanism, the combination with a turntable and meansfor rotating the same, of a tone arm for playing a record placed on theturntable, a canopy disposed over the turntable and having oscillatingmovement to and from forward and rearward positions, a shaft positionedbelow the turntable for pivotally supporting the canopy 101' saidoscillating movement, a swivel bracket located rearwardly of theturntable and mounted for rotation about a vertical axis, said bracketpivota'lly supporting one end of the tone arm for movemen'tverticallyabout a horizontal axis, mechanism for elevating and lowering the tonearm including a pin disposed in vertical alignment under the tone armand having oscillating movement therewith, an elevating plate adapted tocontact said pin and have releasable engagement therewith, a mainoperating shaft, a carn mem'beron the shaft rotated thereby for movingthe plate in vertical directions, means receiving actuation from the'mainsha'ftand connected to said first mentioned shaft for oscillatingthe canopy, and other means connected to said first mentioned shaft andoperating to contact the pin for-oscillating said pin and thus'the tonearm in ahorizontal plane, said other means having actuation in"synchronism 13 with rotation of said cam member, whereby the tone armis oscillated by said other means when the elevating plate is holdingthe tone arm elevated.

12. In phonograph mechanism, the combination with a turntable and meansfor rotating the same, of a tone arm for playing a record placed on theturntable, a canopy disposed over the turntable and having oscillatingmovement to and from forward and rearward positions, means locatedrearwardly of the turntable for mount ing the tone arm for movementhorizontally to swing over the turntable and for movement vertically forlifting and lowering the tone arm with respect to a record, mechanismincluding an elevating plate for elevating and lowering the tone arm, arotatable cam for moving the plate in a vertical direction, means foroscillating'the tone arm in a'horizontal plane, and a main operatingshaft for effecting oscillation of the canopy, rotation of said cam andoscillation of saicl'tone arm.

13. In phonograph mechanism, the combination with a turntable and meansfor rotating the same, of a tone arm, means for automatically actuatingthe tone arm to swing the same from a position of rest adjacent theturntable to an operative position over the same and return for playinga record placed on the turntable, and

canopy means for protecting the record and. ton-:2 1;

arm during play and for protecting the tone arm during non-playingperiods, said canopy means having movement in predetermined relationwith the movement of the tone arm, and said canopy means having aposition between the turntable and tone arm during non-playing periods.

1 In phonograph mechanism, the combina tion with a turntable and meansfor rotating the same, of a tone arm having a position of rest to therear of the turntable, means for actuating said tone arm from saidposition of rest to at. operative position over the turntable and returnfor playing a record placed on the turntable canopy means for saidturntable having oscil lating movement to and from open and closed openand closed positions, said canopy means in open position having locationbetween the turntable and the tone arm and in closed position beinglocated over the turntable, mounting means for the tone arm havinglocation to the rear of the turntable and providing for swingingmovement of the tone arm over the turntable and for vertical movement ofthe same for elevating and lowering the tone arm with respect to saidrec- 0rd, actuating means for causing vertical movement of the tone arm,and other means for synchronously oscillating the canopy means andeffecting swinging movement of the tone arm.

16. In phonograph mechanism, the combination with a turntable and meansfor rotating the same, of a tone arm for playing a record placed on theturntable, canopy means for the turntable having oscillating movement toand from open and closed positions, said canop means in open positionhaving location between the turntable and the tone arm and in closedposition being located over the turntable, means located to the rear ofthe turntable for mounting the tone arm for universal movement wherebythe tone arm may oscillate to swing over the turntable and return andmay move vertically for lifting and lowering movement with respect tosaid record, mechanism for elevating and lowering the tone arm includinga member disposed in alignment under the tone arm and having oscillatingmovement therewith, actuating means for elevating and lowering themember to effect correspond ing movement of the tone arm, and othermeans having associated relation with said member for effectingoscillating movement of the tone arm and also the canopy means.

BENEDICT R. KAMLER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,517,690 Abt Dec. 2, 192a230313-96 La Forest June 4, 1940 2,219,230 Krause Oct. 22, 19492,2i1fi96 Wallace May 12, 1941 2,370,875 Pressley Mar. 6, 1945 2,376,741Weaver May 22, 1945 2,441.1,893 McKee May 18, 1943 FOREIGN PATENTSNumber Country Date 114,471 Australia Jan. 13, 1941

